Maybe the white soled shoes he wore today were not grass court soled shoes since he had to scramble and find any pair to wear at the last minute?

In Roger's press conference, he noted that his shoes did not affect his movement. I believe he also used the white soled shoes during practice before Wimbledon started so he had several pairs of those available.

Last year. Officials are probably too afraid to say anything to Serena because she'll probably take that @#$%*&! headband and *^!@#$ under $#%@?! pants and $!%#&@ strawberries n ^$%@#$ cream and shove them down...you know where I'm going.